Whakaoti i te 4x-12+21-(x)+a^2+6x+9/a(a+3)(a-3)

$$\frac { 4 x - 12 + 21 - ( x ) + a ^ { 2 } + 6 x + 9 } { a ( a + 3 ) ( a - 3 ) }$$

Aromātai

$$\frac{9x+a^{2}+18}{a\left(a^{2}-9\right)}$$

$$a\neq 0\text{ and }|a|\neq 3$$

Ngā Hipanga Rongoā Poto

Tāpirihia te -12 ki te 21, ka 9.

$$\frac{4x+9-x+a^{2}+6x+9}{a\left(a+3\right)\left(a-3\right)}$$

Pahekotia te 4x me -x, ka 3x.

$$\frac{3x+9+a^{2}+6x+9}{a\left(a+3\right)\left(a-3\right)}$$

Pahekotia te 3x me 6x, ka 9x.

$$\frac{9x+9+a^{2}+9}{a\left(a+3\right)\left(a-3\right)}$$

Tāpirihia te 9 ki te 9, ka 18.

$$\frac{9x+18+a^{2}}{a\left(a+3\right)\left(a-3\right)}$$

Whakamahia te āhuatanga tohatoha hei whakarea te a ki te a+3.

$$\frac{9x+18+a^{2}}{\left(a^{2}+3a\right)\left(a-3\right)}$$

Whakamahia te āhuatanga tuaritanga hei whakarea te a^{2}+3a ki te a-3 ka whakakotahi i ngā kupu rite.

$$\frac{9x+18+a^{2}}{a^{3}-9a}$$

Whakaroha

$$\frac{9x+a^{2}+18}{a\left(a^{2}-9\right)}$$

$$a\neq 0\text{ and }|a|\neq 3$$

Ngā Hipanga Rongoā Poto

Tāpirihia te -12 ki te 21, ka 9.

$$\frac{4x+9-x+a^{2}+6x+9}{a\left(a+3\right)\left(a-3\right)}$$

Pahekotia te 4x me -x, ka 3x.

$$\frac{3x+9+a^{2}+6x+9}{a\left(a+3\right)\left(a-3\right)}$$

Pahekotia te 3x me 6x, ka 9x.

$$\frac{9x+9+a^{2}+9}{a\left(a+3\right)\left(a-3\right)}$$

Tāpirihia te 9 ki te 9, ka 18.

$$\frac{9x+18+a^{2}}{a\left(a+3\right)\left(a-3\right)}$$

Whakamahia te āhuatanga tohatoha hei whakarea te a ki te a+3.

$$\frac{9x+18+a^{2}}{\left(a^{2}+3a\right)\left(a-3\right)}$$

Whakamahia te āhuatanga tuaritanga hei whakarea te a^{2}+3a ki te a-3 ka whakakotahi i ngā kupu rite.

$$\frac{9x+18+a^{2}}{a^{3}-9a}$$